Study: Trying to Debunk Vaccine Myths Can Backfire
When vaccine skeptics are presented with statements about the benign nature of vaccines, they double down on their skepticism rather than softening their bias.
When vaccine skeptics are presented with statements about the benign nature of vaccines backed up by extensive medical research, they double down on their skepticism rather than softening their bias.
In an experiment conducted at Dartmouth College, a quarter of 822 individuals surveyed expressed concern that the influenza vaccine could actually cause influenza. When that quarter was exposed to medical information from the Centers for Disease Control demonstrating the safety of the vaccine, they responded by declaring their refusal to get vaccinated.
Big Think's own Simon Oxenham commented on the study at the British Psychological Society:
"A psychological principle that might explain this behavior is motivated reasoning: we are often open to persuasion when it comes to information that fits with our beliefs, while we are more critical or even outright reject information that contradicts our world view."
Understanding the brain's evolutionary function sheds light on this apparent defect in our ability to reason clearly and without undue bias. The brain's main function for millions of years, explains David Ropeik, was to aid us in very basic survival. And while reacting based on immediate feelings and emotions helped us survive in the bush, we are not automatically well-equipped to handle more complex problems:
"[The brain] is a survival machine and it plays a lot of tricks with the facts in order to get us to tomorrow. That worked pretty well when the risks were lions and tigers and bears and the dark — oh my. It’s not as good now when we need to rationalize and reason and use the facts more with the complicated risks we face in a modern age."
- The meaning of the word 'confidence' seems obvious. But it's not the same as self-esteem.
- Confidence isn't just a feeling on your inside. It comes from taking action in the world.
- Join Big Think Edge today and learn how to achieve more confidence when and where it really matters.
- Prejudice is typically perpetrated against 'the other', i.e. a group outside our own.
- But ageism is prejudice against ourselves — at least, the people we will (hopefully!) become.
- Different generations needs to cooperate now more than ever to solve global problems.
The controversial herbicide is everywhere, apparently.
- A jury on August 2018 awarded a non-Hodgkin's lymphoma victim $289 million in Roundup damages.
- Bayer/Monsanto says Roundup is totally safe. Others disagree.
The team caught a glimpse of a process that takes 18,000,000,000,000,000,000,000 years.
- In Italy, a team of scientists is using a highly sophisticated detector to hunt for dark matter.
SMARTER FASTER trademarks owned by The Big Think, Inc. All rights reserved.